BGFRX
William Blair Growth Fund
WILLIAM BLAIR FUNDS
Expense ratio1
0.85%
Net assets2
$193.52M
Holdings2
55
Category
US Equity
2025 return3
10.65%

Investment objective & strategy

As of April 30, 2025 · prospectus

Objective. The William Blair Growth Fund seeks long-term capital appreciation.

Strategy. The Fund invests primarily in a diversified portfolio of equity securities, including common stocks and other forms of equity investments (e.g., securities convertible into common stocks), of U.S. growth companies of all sizes that are expected to exhibit quality growth characteristics. The Fund invests primarily in equity securities issued by companies that typically have market capitalizations no smaller than the smallest capitalized company, and no larger than the largest capitalized company, included in the Russell 3000 Index at the time of the Funds investment. Securities of companies whose market capitalizations no longer meet this definition after purchase may continue to be held in the Fund. To a limited extent, the Fund may also purchase stocks of companies with business characteristics … The Fund invests primarily in a diversified portfolio of equity securities, including common stocks and other forms of equity investments (e.g., securities convertible into common stocks), of U.S. growth companies of all sizes that are expected to exhibit quality growth characteristics. The Fund invests primarily in equity securities issued by companies that typically have market capitalizations no smaller than the smallest capitalized company, and no larger than the largest capitalized company, included in the Russell 3000 Index at the time of the Funds investment. Securities of companies whose market capitalizations no longer meet this definition after purchase may continue to be held in the Fund. To a limited extent, the Fund may also purchase stocks of companies with business characteristics and growth prospects similar to companies in the Russell 3000 Index, but that may have market capitalizations outside the range of companies included in the index. The Russell 3000 Index is a widely recognized, unmanaged index that measures the performance of the 3,000 largest U.S. companies. The size of companies in the Russell 3000 Index may change with market conditions. In addition, changes to the composition of the Russell 3000 Index can change the market capitalization range of the companies in the index. As of March 31, 2025, the Russell 3000 Index included securities issued by companies that ranged in size between $5.2 million and $3.3 trillion. The Russell 3000 Growth Index, the Funds performance benchmark, measures the performance of Russell 3000 companies with higher price-to-book ratios and higher forecasted growth values. In choosing investments, the Adviser performs fundamental company analysis and focuses on stock selection. The Adviser evaluates the extent to which a company meets the quality growth criteria set forth below. All of the criteria are evaluated relative to the valuation of the security. The weight given to a particular investment criterion will depend upon the circumstances, and Fund holdings may not meet all of the following criteria: (a) the company should be, or should have the expectation of becoming, a significant provider in the primary markets it serves, (b) the company should have some distinctive attribute relative to present or potential competitors (for example, this may take the form of proprietary products or processes, a unique distribution system, an entrenched brand name or an especially strong financial position relative to its competition), (c) the company should participate in an industry expected to grow rapidly due to economic factors or technological change or should grow through market share gains in its industry and (d) the company should have a strong management team.

Top holdings

As of March 31, 2026 · N-PORT
SecurityTickerValue% of fund
NVIDIA CORP $23.79M 12.29%
APPLE INC $13.30M 6.87%
MICROSOFT CORP $11.01M 5.69%
MASTERCARD INC CL A $9.19M 4.75%
AMAZON.COM INC $9.18M 4.74%
ALPHABET INC CL A $9.05M 4.67%
ADV MICRO DEVICE $8.57M 4.43%
BROADCOM INC $8.17M 4.22%
META PLATFORMS INC CL A $8.13M 4.20%
INTUIT INC $4.67M 2.41%
View all holdings →

Allocation by sector

As of March 31, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Dec 31, 2025 → Mar 31, 2026
Opened
10
Exited
7
Increased
15
Decreased
28
Unchanged
2

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

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Advisers

As of December 31, 2025 · N-CEN
FirmRole
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Adviser

Footnotes

  1. Expense ratio as of April 30, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of March 31, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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